The Bears–Lions rivalry is a National Football League (NFL) rivalry between the Chicago Bears and Detroit Lions. The franchises first met in 1930 when the Lions were known as the Portsmouth Spartans and based in Portsmouth, Ohio. They moved to Detroit for the 1934 season. The Bears and Lions have been division rivals since 1933 and have usually met twice a season since the Lions franchise began. The two teams play in the two largest metropolitan areas in the Midwest. Chicago and Detroit's home stadiums, Soldier Field and Ford Field, are 280 miles apart and both are easily accessible from I-94.